Buggy code:
final class SQLiteBooksDatabase extends BooksDatabase { private final SQLiteDatabase myDatabase ; private final HashMap < String , SQLiteStatement > myStatements = new HashMap < String , SQLiteStatement > ( ) ; SQLiteBooksDatabase ( Context context ) { } @ Override public void finalize ( ) { } protected void executeAsTransaction ( Runnable actions ) { } private void migrate ( ) { } @ Override protected String getOptionValue ( String name ) { } @ Override protected void setOptionValue ( String name , String value ) { } @ Override protected Book loadBook ( long bookId ) { } @ Override protected Book loadBookByFile ( long fileId , ZLFile file ) { } private boolean myTagCacheIsInitialized ; private final HashMap < Tag , Long > myIdByTag = new HashMap < Tag , Long > ( ) ; private final HashMap < Long , Tag > myTagById = new HashMap < Long , Tag > ( ) ; private void initTagCache ( ) { } @ Override protected Map < Long , Book > loadBooks ( FileInfoSet infos , boolean existing ) { } @ Override protected void setExistingFlag ( Collection < Book > books , boolean flag ) { } @ Override protected void updateBookInfo ( long bookId , long fileId , String encoding , String language , String title ) { } @ Override protected long insertBookInfo ( ZLFile file , String encoding , String language , String title ) { } protected void deleteAllBookAuthors ( long bookId ) { } protected void saveBookAuthorInfo ( long bookId , long index , Author author ) { } protected List < Author > listAuthors ( long bookId ) { } private long getTagId ( Tag tag ) { } protected void deleteAllBookTags ( long bookId ) { } protected void saveBookTagInfo ( long bookId , Tag tag ) { } private Tag getTagById ( long id ) { } protected List < Tag > listTags ( long bookId ) { } @ Override protected List < String > listLabels ( long bookId ) { } @ Override protected List < String > listLabels ( ) { <START_BUG> final Cursor cursor = myDatabase . rawQuery ( ( "SELECT<seq2seq4repair_space>DISTINCT(Labels.name)<seq2seq4repair_space>FROM<seq2seq4repair_space>Labels" + ( ( "<seq2seq4repair_space>INNER<seq2seq4repair_space>JOIN<seq2seq4repair_space>BookLabel<seq2seq4repair_space>ON<seq2seq4repair_space>BookLabel.label_id=Labels.label_id" + "<seq2seq4repair_space>INNER<seq2seq4repair_space>JOIN<seq2seq4repair_space>Books<seq2seq4repair_space>ON<seq2seq4repair_space>BookLabel.book_id=Books.book_id" ) + "<seq2seq4repair_space>WHERE<seq2seq4repair_space>Books.exists=1" ) ) , null ) ; <END_BUG> final LinkedList < String > names = new LinkedList < String > ( ) ; while ( cursor . moveToNext ( ) ) { names . add ( cursor . getString ( 0 ) ) ; } cursor . close ( ) ; return names ; } protected void deleteAllBookUids ( long bookId ) { } @ Override protected void saveBookUid ( long bookId , UID uid ) { } @ Override protected List < UID > listUids ( long bookId ) { } @ Override protected Long bookIdByUid ( UID uid ) { } protected void saveBookSeriesInfo ( long bookId , SeriesInfo seriesInfo ) { } protected SeriesInfo getSeriesInfo ( long bookId ) { } protected void removeFileInfo ( long fileId ) { } protected void saveFileInfo ( FileInfo fileInfo ) { } protected Collection < FileInfo > loadFileInfos ( ) { } protected Collection < FileInfo > loadFileInfos ( ZLFile file ) { } protected Collection < FileInfo > loadFileInfos ( long fileId ) { } @ Override protected void addBookHistoryEvent ( long bookId , int event ) { } @ Override protected void removeBookHistoryEvents ( long bookId , int event ) { } @ Override protected List < Long > loadRecentBookIds ( int event , int limit ) { } @ Override protected void setLabel ( long bookId , String label ) { } @ Override protected void removeLabel ( long bookId , String label ) { } @ Override protected boolean hasVisibleBookmark ( long bookId ) { } @ Override protected List < Bookmark > loadBookmarks ( BookmarkQuery query ) { } @ Override protected List < HighlightingStyle > loadStyles ( ) { } protected void saveStyle ( HighlightingStyle style ) { } @ Override protected long saveBookmark ( Bookmark bookmark ) { } @ Override protected void deleteBookmark ( Bookmark bookmark ) { } protected WithTimestamp getStoredPosition ( long bookId ) { } protected void storePosition ( long bookId , ZLTextPosition position ) { } private void deleteVisitedHyperlinks ( long bookId ) { } protected void addVisitedHyperlink ( long bookId , String hyperlinkId ) { } protected Collection < String > loadVisitedHyperlinks ( long bookId ) { } @ Override protected void saveBookProgress ( long bookId , RationalNumber progress ) { } @ Override protected RationalNumber getProgress ( long bookId ) { } @ Override protected String getHash ( long bookId , long lastModified ) throws NotAvailable { } @ Override protected void setHash ( long bookId , String hash ) throws NotAvailable { } @ Override protected List < Long > bookIdsByHash ( String hash ) { } @ Override protected void deleteBook ( long bookId ) { } private void createTables ( ) { } private void updateTables1 ( ) { } private void updateTables2 ( ) { } private void updateTables3 ( ) { } private void updateTables4 ( ) { } private void updateTables5 ( ) { } private void updateTables6 ( ) { } private void updateTables7 ( ) { } private void updateTables8 ( ) { } private void updateTables9 ( ) { } private void updateTables10 ( ) { } private void updateTables11 ( ) { } private void updateTables12 ( ) { } private void updateTables13 ( ) { } private void updateTables14 ( ) { } private void updateTables15 ( ) { } private void updateTables16 ( ) { } private void updateTables17 ( ) { } private void updateTables18 ( ) { } private void updateTables19 ( ) { } private void updateTables20 ( ) { } private void updateTables21 ( ) { } private void updateTables22 ( ) { } private void updateTables23 ( ) { }

Fix:
final Cursor cursor = myDatabase . rawQuery ( ( "SELECT<seq2seq4repair_space>DISTINCT(Labels.name)<seq2seq4repair_space>FROM<seq2seq4repair_space>Labels" + ( ( "<seq2seq4repair_space>INNER<seq2seq4repair_space>JOIN<seq2seq4repair_space>BookLabel<seq2seq4repair_space>ON<seq2seq4repair_space>BookLabel.label_id=Labels.label_id" + "<seq2seq4repair_space>INNER<seq2seq4repair_space>JOIN<seq2seq4repair_space>Books<seq2seq4repair_space>ON<seq2seq4repair_space>BookLabel.book_id=Books.book_id" ) + "<seq2seq4repair_space>WHERE<seq2seq4repair_space>Books.`exists`=1" ) ) , null ) ;